Did you recap the power supply? One the 909 it is possible to overheat a thin trace hidden under one of teh big caps. Also I put in new transitors and acps and one of them was actually bad. I raelly suspect your power supply. Lorne From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of cxacxu Sent: October-27-13 9:08 PM To: vintagesynthrepair@yahoogroups.com Subject: [vintagesynthrepair] Strange TR-808 reset problem Got a strange problem with an 808 here, the CPU will only start up when the +15v rail is disconnected. When +15v is connected the CPU does not start and the first light of step 1 does not light, the 5V and +/-15V rails are all steady, When the +15V is disconnected the cpu will start up and the sequencer will run. Any thoughts? L
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RE: [vintagesynthrepair] Strange TR-808 reset problem
2013-10-28 by Lorne Hammond